Fix a few bugs in server selector, do not hardcode paths

ServerSelector/PathUtil.cs

@@ -0,0 +1,99 @@
+using System;
+using System.IO;
+
+namespace ServerSelector;
+
+public class PathUtil
+{
+    public bool LauncherExists { get; private set; }
+    public string? LauncherBasePath { get; set; }
+    public string GameBasePath { get; set; }
+    public string? SystemHostsFile
+    {
+        get
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "Drivers\\etc\\hosts");
+            }
+            else if (OperatingSystem.IsLinux())
+            {
+                return "/etc/hosts";
+            }
+            else throw new NotImplementedException("Unsupported operating system");
+        }
+    }
+
+    public string? WineHostsFile => GameBasePath + "../../wine_prefix/drive_c/windows/system32/drivers/etc/hosts";
+
+    public string? LauncherCertificatePath
+    {
+        get
+        {
+            if (LauncherBasePath == null) return null;
+
+            string path = Path.Combine(LauncherBasePath, "intl_service/intl_cacert.pem");
+
+            if (!File.Exists(path))
+            {
+                // Older game/SDK version
+                path = Path.Combine(LauncherBasePath, "intl_service/cacert.pem");
+            }
+            return path;
+        }
+    }
+
+    public string GamePluginsDirectory => Path.Combine(GameBasePath ?? throw new InvalidOperationException("Game path not assigned"), "nikke_Data/Plugins/x86_64/");
+    public string? GameCertificatePath
+    {
+        get
+        {
+            string path = Path.Combine(GamePluginsDirectory, "intl_cacert.pem");
+
+            if (!File.Exists(path))
+            {
+                // Older game/SDK version
+                path = Path.Combine(GamePluginsDirectory, "cacert.pem");
+            }
+
+            return path;
+        }
+    }
+
+    public string? GameSodiumPath => Path.Combine(GamePluginsDirectory, "sodium.dll");
+    public string? GameSodiumBackupPath => Path.Combine(GamePluginsDirectory, "sodium.dll.bak");
+
+    /// <summary>
+    /// Sets the directory where the (game name) and Launcher directories are located
+    /// </summary>
+    /// <param name="basePath">directory where the (game name) and Launcher directories are located</param>
+    /// <returns>Return (bool, string) where if the operation is successful, true is returned. If it fails, the string contains more details.</returns>
+    public (bool, string?) SetBasePath(string basePath)
+    {
+        GameBasePath = Path.Combine(basePath, "NIKKE", "game");
+        LauncherBasePath = Path.Combine(basePath, "Launcher");
+
+        // Various sanity checks
+        if (!Directory.Exists(GameBasePath))
+        {
+            return (false, $"Directory \"{GameBasePath}\" does not exist");
+        }
+
+        LauncherExists = Directory.Exists(LauncherBasePath);
+
+        if (LauncherExists)
+        {
+            if (!File.Exists(Path.Combine(LauncherBasePath, "nikke_launcher.exe")))
+            {
+                return (false, "Game path is invalid. Make sure that nikke_launcher.exe exists in the <Game Path>/launcher folder");
+            }
+        }
+
+        if (!File.Exists(GameCertificatePath))
+        {
+            return (false, $"Path is invalid. File \"{GameCertificatePath}\" does not exist.");
+        }
+
+        return (true, null);
+    }
+}

ServerSelector/SearchReplace.cs

@@ -1,164 +0,0 @@
-// From: https://github.com/Ninka-Rex/CSharp-Search-and-Replace/blob/main/SearchReplace.cs
-
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-
-namespace ServerSelector;
-
-public static class PatchUtility
-{
-    public static bool CanFindOffset(string filePath, string[] searchPatterns)
-    {
-        // Check if the file exists
-        if (!File.Exists(filePath)) { Console.WriteLine("[ERROR] File not found: " + filePath); return false; }
-
-        // Read the binary data from the file as an array of bytes
-        byte[] fileData = File.ReadAllBytes(filePath);
-
-        for (int k = 0; k < searchPatterns.Length; k++)
-        {
-            // Convert the hexadecimal strings to byte arrays using a helper method
-            byte[] searchBytes = HexStringToBytes(searchPatterns[k]);
-
-            // Find the index of the first occurrence of the search pattern in the file data using another helper method
-            List<int> results = FindPatternIndex(fileData, searchBytes);
-            if (results.Count <= 1) return false;
-
-            Console.WriteLine("offset: " + results[1].ToString("X"));
-
-            // If the index is -1, it means the pattern was not found, so we return false and log an error message
-            if (results[1] == -1)
-            {
-                Console.WriteLine("[ERROR] Search pattern not found: " + searchPatterns[k]);
-                return false;
-            }
-        }
-        return true;
-    }
-    // This method searches and replaces binary patterns in a given file
-    // It takes three parameters:
-    // - filePath: the path of the file to be patched
-    // - searchPatterns: an array of hexadecimal strings representing the patterns to be searched for
-    // - replacePatterns: an array of hexadecimal strings representing the patterns to be replaced with
-    // It returns true if the patching was successful, or false if there was an error or a pattern was not found
-    public static bool SearchAndReplace(string filePath, string[] searchPatterns, string[] replacePatterns)
-    {
-        try
-        {
-            // Check if the file exists
-            if (!File.Exists(filePath)) { Console.WriteLine("[ERROR] File not found: " + filePath); return false; }
-
-            // Read the binary data from the file as an array of bytes
-            byte[] fileData = File.ReadAllBytes(filePath);
-
-            // Backup the original file by copying it to a new file with a .bak extension
-            string backupFilePath = filePath + ".bak";
-            if (!File.Exists(backupFilePath))
-            {
-                File.Copy(filePath, backupFilePath);
-            }
-
-            // Loop through each pair of search and replace patterns and apply them to the file data
-            for (int k = 0; k < searchPatterns.Length; k++)
-            {
-                // Convert the hexadecimal strings to byte arrays using a helper method
-                byte[] searchBytes = HexStringToBytes(searchPatterns[k]);
-                byte[] replaceBytes = HexStringToBytes(replacePatterns[k]);
-
-                // Find the index of the first occurrence of the search pattern in the file data using another helper method
-
-                // Note: game versions 124 - 133 have 2 matches, 2nd one is the correct one
-                //       game version 134 - ? has 1 match which is correct
-                int index = -1;
-                List<int> indexes = FindPatternIndex(fileData, searchBytes);
-                if (indexes.Count == 1)
-                    index = indexes[0];
-                else index = indexes[1];
-
-                Console.WriteLine("Found offset: " + index.ToString("X"));
-
-                // If the index is -1, it means the pattern was not found, so we return false and log an error message
-                if (index == -1)
-                {
-                    Console.WriteLine("[ERROR] Search pattern not found: " + searchPatterns[k]);
-                    return false;
-                }
-
-                // Replace the pattern at the found index with the replace pattern, preserving original values when wildcards are encountered
-                // A wildcard is represented by either 00 or FF in the replace pattern, meaning that we keep the original value at that position
-                for (int i = 0; i < replaceBytes.Length; i++)
-                {
-                    if (replaceBytes[i] != 0x00 && replaceBytes[i] != 0xFF)
-                    {
-                        fileData[index + i] = replaceBytes[i];
-                    }
-                    else if (replaceBytes[i] == 0x00)
-                    {
-                        fileData[index + i] = 0x00;
-                    }
-                }
-
-                // Log a success message with the offset and file name where the patch was applied
-                string exeName = Path.GetFileName(filePath);
-                Console.WriteLine($"[Patch] Apply patch success at 0x{index:X} in {exeName}");
-            }
-
-            // Write the modified data back to the file, overwriting the original content
-            File.WriteAllBytes(filePath, fileData);
-
-            return true;
-        }
-        catch (Exception ex)
-        {
-            // If any exception occurs during the patching process, we return false and log an error message with the exception details
-            Console.WriteLine("[ERROR] An error occurred while writing the file: " + ex.Message);
-            return false;
-        }
-    }
-
-    // This helper method converts a hexadecimal string to a byte array
-    // It takes one parameter:
-    // - hex: a string of hexadecimal digits, optionally separated by spaces or question marks
-    // It returns a byte array corresponding to the hexadecimal values in the string
-    private static byte[] HexStringToBytes(string hex)
-    {
-        hex = hex.Replace(" ", "").Replace("??", "FF"); // Replace ?? with FF for wildcards
-        return [.. Enumerable.Range(0, hex.Length)
-            .Where(x => x % 2 == 0) // Take every second character in the string
-            .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))]; // Convert the result to an array of bytes
-    }
-
-    // This helper method finds the index of the first occurrence of a pattern in a data array
-    // It takes two parameters:
-    // - data: an array of bytes representing the data to be searched in
-    // - pattern: an array of bytes representing the pattern to be searched for
-    // It returns an integer representing the index where the pattern was found, or -1 if it was not found
-    private static List<int> FindPatternIndex(byte[] data, byte[] pattern)
-    {
-        List<int> points = [];
-        // Loop through each possible position in the data array where the pattern could start
-        for (int i = 0; i < data.Length - pattern.Length + 1; i++)
-        {
-            bool found = true; // Assume that the pattern is found until proven otherwise
-            // Loop through each byte in the pattern and compare it with the corresponding byte in the data array
-            for (int j = 0; j < pattern.Length; j++)
-            {
-                // If the pattern byte is not FF (wildcard) and it does not match the data byte, then the pattern is not found at this position
-                if (pattern[j] != 0xFF && data[i + j] != pattern[j])
-                {
-                    found = false;
-                    break;
-                }
-            }
-            // If the pattern was found at this position, return the index
-            if (found)
-            {
-                points.Add(i);
-            }
-        }
-        // If the pattern was not found in the entire data array, return -1
-        return points;
-    }
-}

ServerSelector/ServerSwitcher.cs

@@ -4,68 +4,49 @@ using System.IO;
 using System.Security.Cryptography.X509Certificates;
 using System.Threading.Tasks;
 
-namespace ServerSelector
+namespace ServerSelector;
+
+public class ServerSwitcher
 {
-    public class ServerSwitcher
-    {
     private const string HostsStartMarker = "# begin ServerSelector entries";
     private const string HostsEndMarker = "# end ServerSelector entries";
 
-        public static bool IsUsingOfficalServer()
+    private static PathUtil util = new();
+
+    public static bool IsUsingLocalServer()
     {
-            string hostsFile = File.ReadAllText(OperatingSystem.IsWindows() ? "C:\\Windows\\System32\\drivers\\etc\\hosts" : "/etc/hosts");
-            return !hostsFile.Contains("global-lobby.nikke-kr.com");
+        return File.ReadAllText(util.SystemHostsFile).Contains("global-lobby.nikke-kr.com");
     }
 
     public static bool IsOffline()
     {
-            string hostsFile = File.ReadAllText(OperatingSystem.IsWindows() ? "C:\\Windows\\System32\\drivers\\etc\\hosts" : "/etc/hosts");
-            return hostsFile.Contains("cloud.nikke-kr.com");
+        return File.ReadAllText(util.SystemHostsFile).Contains("cloud.nikke-kr.com");
     }
 
-        public static async Task<string> CheckIntegrity(string gamePath, string launcherPath)
+    public static (bool, string?) SetBasePath(string basePath)
     {
-            if (IsUsingOfficalServer())
+        return util.SetBasePath(basePath);
+    }
+
+    public static async Task<string> CheckIntegrity()
+    {
+        if (!IsUsingLocalServer())
             return "Official server";
 
-            if (!Directory.Exists(gamePath))
+        if (File.Exists(util.LauncherCertificatePath))
         {
-                return "Game path does not exist";
-            }
-
-            if (!Directory.Exists(launcherPath))
-            {
-                return "Launcher path does not exist";
-            }
-
-            if (!File.Exists(Path.Combine(launcherPath, "nikke_launcher.exe")))
-            {
-                return "Launcher path is invalid. Make sure that the game executable exists in the launcher folder";
-            }
-
-
-            // TODO fix this mess
-            string launcherCertList = launcherPath + "/intl_service/intl_cacert.pem";
-            if (!File.Exists(launcherCertList))
-                launcherCertList = launcherPath + "/intl_service/cacert.pem"; // older INTL sdk versions
-            string gameCertList = gamePath + "/nikke_Data/Plugins/x86_64/intl_cacert.pem";
-            if (!File.Exists(gameCertList))
-                gameCertList = gamePath + "/nikke_Data/Plugins/x86_64/cacert.pem"; // older INTL sdk versions
-
-            if (File.Exists(launcherCertList))
-            {
-                string certList1 = await File.ReadAllTextAsync(launcherCertList);
+            string certList1 = await File.ReadAllTextAsync(util.LauncherCertificatePath);
 
             if (!certList1.Contains("Good SSL Ca"))
-                    return "SSL Cert Patch missing";
+                return "SSL Cert Patch missing Launcher";
         }
 
-            if (File.Exists(gameCertList))
+        if (File.Exists(util.GameCertificatePath))
         {
-                string certList2 = await File.ReadAllTextAsync(gameCertList);
+            string certList2 = await File.ReadAllTextAsync(util.GameCertificatePath);
 
             if (!certList2.Contains("Good SSL Ca"))
-                    return "SSL Cert Patch missing";
+                return "SSL Cert Patch missing Game";
         }
 
         // TODO: Check sodium lib
@@ -124,35 +105,18 @@ namespace ServerSelector
         }
     }
 
-        public static async Task<ServerSwitchResult> SaveCfg(bool useOffical, string gamePath, string? launcherPath, string ip, bool offlineMode)
+    public static async Task<ServerSwitchResult> SaveCfg(bool useOffical, string ip, bool offlineMode)
     {
-            string sodiumLib = AppDomain.CurrentDomain.BaseDirectory + "sodium.dll";
-            string gameSodium = gamePath + "/nikke_Data/Plugins/x86_64/sodium.dll";
-            string gameAssembly = gamePath + "/GameAssembly.dll";
-            string sodiumBackup = gameSodium + ".bak";
-            string hostsFilePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "drivers/etc/hosts");
         string CAcert = await File.ReadAllTextAsync(AppDomain.CurrentDomain.BaseDirectory + "myCA.pem");
+        string sodiumLib = AppDomain.CurrentDomain.BaseDirectory + "sodium.dll";
 
-            string launcherCertList = launcherPath + "/intl_service/intl_cacert.pem";
-             if (!File.Exists(launcherCertList))
-                launcherCertList = launcherPath + "/intl_service/cacert.pem"; // older INTL sdk versions
-            string gameCertList = gamePath + "/nikke_Data/Plugins/x86_64/intl_cacert.pem";
-            if (!File.Exists(gameCertList))
-                gameCertList = gamePath + "/nikke_Data/Plugins/x86_64/cacert.pem"; // older INTL sdk versions
         bool supported = true;
-
-            if (OperatingSystem.IsLinux())
-            {
-                // for wine
-                hostsFilePath = gamePath + "/../../../windows/system32/drivers/etc/hosts";
-            }
-
         if (useOffical)
         {
-                await RevertHostsFile(hostsFilePath);
+            await RevertHostsFile(util.SystemHostsFile);
             if (OperatingSystem.IsLinux())
             {
-                    await RevertHostsFile("/etc/hosts");
+                await RevertHostsFile(util.WineHostsFile);
             }
 
             try
@@ -172,28 +136,28 @@ namespace ServerSelector
             }
 
             // restore sodium
-                if (!File.Exists(sodiumBackup))
+            if (!File.Exists(util.GameSodiumBackupPath))
             {
                 throw new Exception("sodium backup does not exist. Repair the game in the launcher and switch to local server and back to official.");
             }
-                File.Copy(sodiumBackup, gameSodium, true);
+            File.Copy(util.GameSodiumBackupPath, util.GameSodiumPath, true);
 
-                if (File.Exists(launcherCertList))
+            if (util.LauncherCertificatePath != null && File.Exists(util.LauncherCertificatePath))
             {
-                    string certList = await File.ReadAllTextAsync(launcherCertList);
+                string certList = await File.ReadAllTextAsync(util.LauncherCertificatePath);
 
                 int goodSslIndex1 = certList.IndexOf("Good SSL Ca");
                 if (goodSslIndex1 != -1)
-                        await File.WriteAllTextAsync(launcherCertList, certList[..goodSslIndex1]);
+                    await File.WriteAllTextAsync(util.LauncherCertificatePath, certList[..goodSslIndex1]);
             }
 
-                if (File.Exists(gameCertList))
+            if (File.Exists(util.GameCertificatePath))
             {
-                    string certList = await File.ReadAllTextAsync(gameCertList);
+                string certList = await File.ReadAllTextAsync(util.GameCertificatePath);
 
                 int newCertIndex = certList.IndexOf("Good SSL Ca");
                 if (newCertIndex != -1)
-                        await File.WriteAllTextAsync(gameCertList, certList[..newCertIndex]);
+                    await File.WriteAllTextAsync(util.GameCertificatePath, certList[..newCertIndex]);
             }
         }
         else
@@ -224,37 +188,36 @@ namespace ServerSelector
 255.255.221.21 sentry.io
 {HostsEndMarker}";
 
-                await RevertHostsFile(hostsFilePath);
+            await RevertHostsFile(util.SystemHostsFile);
 
             try
             {
-                    FileInfo fi = new(hostsFilePath);
+                FileInfo fi = new(util.SystemHostsFile);
                 if (fi.IsReadOnly)
                 {
                     // try to remove readonly flag
                     fi.IsReadOnly = false;
                 }
 
-                    if (!(await File.ReadAllTextAsync(hostsFilePath)).Contains("global-lobby.nikke-kr.com"))
+                if (!(await File.ReadAllTextAsync(util.SystemHostsFile)).Contains("global-lobby.nikke-kr.com"))
                 {
-                        using StreamWriter w = File.AppendText(hostsFilePath);
+                    using StreamWriter w = File.AppendText(util.SystemHostsFile);
                     w.WriteLine();
                     w.Write(hosts);
                 }
             }
             catch
             {
-                    throw new Exception("cannot modify C:\\Windows\\System32\\drivers\\etc\\hosts file to redirect to server, check your antivirus software");
+                throw new Exception($"cannot modify \"{util.SystemHostsFile}\" file to redirect to server, check your antivirus software");
             }
 
-                // Also change /etc/hosts if running on linux
+            // Also change hosts file in wineprefix if running on linux
             if (OperatingSystem.IsLinux())
             {
-                    hostsFilePath = "/etc/hosts";
-                    await RevertHostsFile(hostsFilePath);
-                    if (!(await File.ReadAllTextAsync(hostsFilePath)).Contains("global-lobby.nikke-kr.com"))
+                await RevertHostsFile(util.WineHostsFile);
+                if (!(await File.ReadAllTextAsync(util.WineHostsFile)).Contains("global-lobby.nikke-kr.com"))
                 {
-                        using StreamWriter w = File.AppendText(hostsFilePath);
+                    using StreamWriter w = File.AppendText(util.WineHostsFile);
                     w.WriteLine();
                     w.Write(hosts);
                 }
@@ -273,45 +236,44 @@ namespace ServerSelector
             }
             catch { }
 
-                if (!File.Exists(gameSodium))
+            if (!File.Exists(util.GameSodiumPath))
             {
-                    throw new Exception("expected sodium library to exist at path " + gameSodium);
+                throw new Exception("expected sodium library to exist at path " + util.GameSodiumPath);
             }
 
             // copy backup if sodium size is correct
-                byte[] sod = await File.ReadAllBytesAsync(gameSodium);
+            byte[] sod = await File.ReadAllBytesAsync(util.GameSodiumPath);
             if (sod.Length <= 307200) // TODO this is awful
             {
                 // orignal file size, copy backup
-                    await File.WriteAllBytesAsync(sodiumBackup, sod);
+                await File.WriteAllBytesAsync(util.GameSodiumBackupPath, sod);
             }
 
             // write new sodium library
-                await File.WriteAllBytesAsync(gameSodium, await File.ReadAllBytesAsync(sodiumLib));
+            await File.WriteAllBytesAsync(util.GameSodiumPath, await File.ReadAllBytesAsync(sodiumLib));
 
             // Add generated CA certificate to launcher/game curl certificate list
-                if (launcherPath != null)
+            if (util.LauncherCertificatePath != null)
             {
-                    await File.WriteAllTextAsync(launcherCertList,
-                        await File.ReadAllTextAsync(launcherCertList)
+                await File.WriteAllTextAsync(util.LauncherCertificatePath,
+                    await File.ReadAllTextAsync(util.LauncherCertificatePath)
                     + "\nGood SSL Ca\n===============================\n"
                     + CAcert);
             }
 
-                await File.WriteAllTextAsync(gameCertList,
-                    await File.ReadAllTextAsync(gameCertList)
+            await File.WriteAllTextAsync(util.GameCertificatePath,
+                await File.ReadAllTextAsync(util.GameCertificatePath)
                 + "\nGood SSL Ca\n===============================\n"
                 + CAcert);
         }
 
         return new ServerSwitchResult(true, null, supported);
     }
-    }
+}
 
-    public class ServerSwitchResult(bool ok, Exception? exception, bool isSupported)
-    {
+public class ServerSwitchResult(bool ok, Exception? exception, bool isSupported)
+{
     public bool Ok { get; set; } = ok;
     public Exception? Exception { get; set; } = exception;
     public bool IsSupported { get; set; } = isSupported;
-    }
 }

ServerSelector/Views/MainView.axaml

@@ -116,7 +116,7 @@
 
 					<TextBlock VerticalAlignment="Center" Margin="5" Grid.Row="0" Grid.Column="0" ToolTip.Tip="The folder with the game and launcher folders.">Game root path: </TextBlock>
 					<TextBox x:Name="txtGamePath" Grid.Row="0" Grid.Column="1" TextChanged="GamePath_TextChanged" ToolTip.Tip="The folder with the game and launcher folders.">C:\NIKKE\</TextBox>
-					<Button x:Name="btnSelectGamePath" Grid.Row="0" Grid.Column="2" Classes="utility" Click="BtnSelectGamePath_Click">...</Button>
+					<Button x:Name="btnSelectGamePath" Grid.Row="0" Grid.Column="2" Classes="utility" Click="BtnSelectGamePath_Click" Margin="5,0,0,0">...</Button>
 
 					<TextBlock VerticalAlignment="Center" Margin="5" Grid.Row="4" Grid.Column="0">Server: </TextBlock>
 
@@ -144,7 +144,7 @@
                     </Button>
 				</Grid>
 			</TabItem>
-			<TabItem Header="Android">
+			<TabItem Header="Android" IsVisible="False">
 				<Grid Margin="5">
 					<Grid.ColumnDefinitions>
 						<ColumnDefinition Width="auto"></ColumnDefinition>

ServerSelector/Views/MainView.axaml.cs

@@ -14,9 +14,9 @@ public partial class MainView : UserControl
     public MainView()
     {
         InitializeComponent();
-        CmbServerSelection.SelectedIndex = ServerSwitcher.IsUsingOfficalServer() ? 0 : 1;
+        CmbServerSelection.SelectedIndex = ServerSwitcher.IsUsingLocalServer() ? 1 : 0;
 
-        TxtIpAddress.IsEnabled = !ServerSwitcher.IsUsingOfficalServer();
+        TxtIpAddress.IsEnabled = !ServerSwitcher.IsUsingLocalServer();
         ChkOffline.IsChecked = ServerSwitcher.IsOffline();
 
         if (OperatingSystem.IsWindows() && !new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator))
@@ -57,25 +57,17 @@ public partial class MainView : UserControl
         }
     }
 
-    private string? GamePath
+    private string? BasePath
     {
         get
         {
             if (txtGamePath.Text == null) return null;
-            return Path.Combine(txtGamePath.Text, "NIKKE", "game");
-        }
-    }
-    private string? LauncherPath
-    {
-        get
-        {
-            if (txtGamePath.Text == null) return null;
-            return Path.Combine(txtGamePath.Text, "Launcher");
+            return txtGamePath.Text;
         }
     }
     private bool ValidatePaths(bool showMessage)
     {
-        if (string.IsNullOrEmpty(txtGamePath.Text) || LauncherPath == null)
+        if (string.IsNullOrEmpty(BasePath))
         {
             SetGamePathValid(false);
             if (showMessage)
@@ -83,20 +75,21 @@ public partial class MainView : UserControl
             return false;
         }
 
-        if (!Directory.Exists(GamePath))
+        if (!Directory.Exists(BasePath))
         {
             SetGamePathValid(false);
             if (showMessage)
-                ShowWarningMsg("game folder does not exist in the game root folder", "Error");
+                ShowWarningMsg("Game path does not exist", "Error");
             return false;
         }
 
-        if (!File.Exists(Path.Combine(LauncherPath, "nikke_launcher.exe")))
+        var result = ServerSwitcher.SetBasePath(BasePath);
+
+        if (!result.Item1)
         {
             SetGamePathValid(false);
             if (showMessage)
-                ShowWarningMsg("Game path is invalid. Make sure that nikke_launcher.exe exists in the <Game Path>/launcher folder", "Error");
-
+                ShowWarningMsg(result.Item2, "Error");
             return false;
         }
 
@@ -107,11 +100,11 @@ public partial class MainView : UserControl
 
     private async void UpdateIntegrityLabel()
     {
-        if (!ValidatePaths(false) || txtGamePath.Text == null || GamePath == null || LauncherPath == null)
+        if (!ValidatePaths(false) || txtGamePath.Text == null || BasePath == null)
             return;
 
         SetLoadingScreenVisible(true);
-        LblStatus.Text = "Status: " + await ServerSwitcher.CheckIntegrity(GamePath, LauncherPath);
+        LblStatus.Text = "Status: " + await ServerSwitcher.CheckIntegrity();
         SetLoadingScreenVisible(false);
     }
 
@@ -131,7 +124,7 @@ public partial class MainView : UserControl
 
     private async void Save_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
     {
-        if (!ValidatePaths(true) || txtGamePath.Text == null || GamePath == null || LauncherPath == null)
+        if (!ValidatePaths(true) || txtGamePath.Text == null || BasePath == null)
             return;
 
         if (CmbServerSelection.SelectedIndex == 1 && !IPAddress.TryParse(TxtIpAddress.Text, out _))
@@ -150,7 +143,7 @@ public partial class MainView : UserControl
         SetLoadingScreenVisible(true);
         try
         {
-            ServerSwitchResult res = await ServerSwitcher.SaveCfg(CmbServerSelection.SelectedIndex == 0, GamePath, LauncherPath, TxtIpAddress.Text, ChkOffline.IsChecked ?? false);
+            ServerSwitchResult res = await ServerSwitcher.SaveCfg(CmbServerSelection.SelectedIndex == 0, TxtIpAddress.Text, ChkOffline.IsChecked ?? false);
 
             if (!res.IsSupported)
             {